2026-10-23T19:44:09

Anti-Alkali Primer for New Walls: Moisture Limits 12%, 17% and 22% per TDS

新墙抗碱底漆：Nippon 12%、Dulux 17% 与 22%、Jotun 未给含水率限值

Anti-alkali primer for new walls is used because fresh plaster and cement are alkaline and damp; a topcoat applied too early can fade, blotch or blister. A question rarely answered at the shop: when may the wall be painted? This article compares the technical data sheets (TDS) of four manufacturer primers: Nippon Paint 3-IN-1 Anti-Alkali Primer Sealer, Dulux Professional Diamond Sealer A1000, Dulux Alkali Killer (solvent-based) and Jotun Jotashield Primer. The moisture limits turn out to differ, and one brand does not state any. Data as of 23 October 2026.

Anti-alkali primer for new walls: moisture limits and spread rate from the TDS

Product	Data in the manufacturer document	Document	homeX note	Source
Nippon 3-IN-1 Anti-Alkali Primer Sealer: wall limits	Avoid painting if wall pH is above 9 and moisture above 12% (Protimeter) or above 6% (Elcometer); for new walls optimum condition generally takes 1 month	TSDS 3-IN-1 Anti-Alkali Primer Sealer (code 1.2201, no issue date)	The only one of the four documents that gives a wait for new walls (1 month) and two instruments	Nippon Paint Indonesia
Nippon 3-IN-1: application and spread rate	Water-based styrene acrylic; brush, roller or airless; water thinning 5–10% (brush, roller) or 20% (airless); theoretical spread 10–12 m²/litre/coat; recommended thickness 35 µ; touch-dry 15 minutes, hard-dry 1 hour, recoat interval 2 hours (30°C); do not apply above 85% RH or below 7°C; can be topcoated with emulsion, enamel, epoxy, except alkyd-based paints	TSDS 3-IN-1 Anti-Alkali Primer Sealer (code 1.2201)	homeX calculation: 100 m² / 10–12 m² per litre = 8.3–10 litres per coat, before waste	Nippon Paint Indonesia
Dulux Professional Diamond Sealer A1000	Water-based alkali-resistant sealer for new interior masonry walls; a new wall is fit to paint when moisture is below 17% (Protimeter) and pH below 9 (pH paper); repainting not recommended above 17% and/or pH above 9; 20 litre pack; spread 10–11 m²/litre on smooth average-porosity surfaces; ready to use without thinning; roller, brush or conventional spray	Dulux Professional product page (not a PDF TDS)	homeX calculation: 100 m² / 10–11 = 9.1–10 litres per coat. The page gives no wait time for new walls: data gap	Dulux Professional
Dulux Alkali Killer (solvent-based)	For brick, plaster, cement and asbestos, interior and exterior; tolerates damp walls but not saturated surfaces; do not apply above 22% moisture (Protimeter), as trapped moisture causes blisters; 2.5 and 20 litre packs; volume solids 38%; theoretical spread 8–10 m²/litre; dry film 40–45 µm; recoat 4–5 hours (30°C); thin with Dulux Thinner A850-41 or white spirit	Dulux Alkali Killer data sheet (dated August 2014)	homeX calculation: 100 m² / 8–10 = 10–12.5 litres per coat. The document is over 12 years old; check the latest version before use	Dulux (AkzoNobel)
Jotun Jotashield Primer	Water-based acrylic primer for concrete, stone, plaster and brick, new exterior or repainting; alkali-resistant; solids 32 ± 2% by volume; theoretical spread 8–10.7 m²/litre; dry film 30–40 µm; water thinning maximum 5%; substrate at least 10°C and 3°C above dew point; at 23°C touch-dry 1 hour, hard-dry 6 hours, overcoat minimum 2 hours; system: 1 primer coat then 2 Jotashield topcoats	TDS Jotashield Primer (issued 23.01.2025)	The TDS has no wall moisture or pH limit and no wait time for new walls: data gap. homeX calculation: 100 m² / 8–10.7 = 9.3–12.5 litres per coat	Jotun Indonesia

Source: Nippon Paint TSDS 3-IN-1 Anti-Alkali Primer Sealer (code 1.2201), the Dulux Professional Diamond Sealer A1000 product page, the Dulux Alkali Killer data sheet (August 2014) and the Jotun Jotashield Primer TDS (23 January 2025). Data gaps: the Nippon TSDS has no issue date; Dulux A1000 data comes from a web page, not a PDF TDS; the Jotun TDS has no moisture or pH limit; we did not read any national paint-application standard and did not compare performance between brands (no independent test); moisture limits are measured with different instruments so they cannot be compared directly; other products (Avitex, Mowilex, Catylac, Propan) were not read; prices not checked. Data as of 23 October 2026.

Why the 12%, 17% and 22% figures differ

homeX analysis, not a manufacturer claim: the documents do not explain the reason. What the text shows: Nippon gives two figures for two instruments (12% Protimeter and 6% Elcometer), so percentages from different instruments are not comparable; Dulux A1000 is water-based for new interior walls; Alkali Killer is solvent-based and positioned as a primer usable on slightly damp walls. If you do not know the contractor instrument, use the strictest figure (12% Protimeter) as a benchmark and ask for readings to be recorded with dates.

Primer needed for 100 m² (theoretical)

homeX calculation for one coat from the theoretical spread: Nippon 8.3–10 litres; Dulux A1000 9.1–10 litres; Alkali Killer 10–12.5 litres; Jotashield Primer 9.3–12.5 litres. Rough plaster absorbs more, so real figures are usually above these; Jotun itself says spread depends on texture, porosity and loss. The full paint cost per room is in the related articles below.

Buyer tips

Ask the contractor to measure wall moisture and pH and record the instrument and date before priming.
Tell the shop whether it is a new wall or a repaint; the Dulux documents distinguish between them.
Do not mix systems: use the primer and topcoat recommended in the TDS (Nippon: not alkyd; Jotun: 1 primer + 2 topcoats).
Keep photos of the pack label and batch number for warranty claims.

Request a anti-alkali primer for new walls quote for your project

homeX can compare several brands at once and prepare a written quote for projects, renovations or shop stock. Send your needs (brand, size, quantity, location) via WhatsApp +62 821 1818 998, or visit the homeX showroom: Priskilla Tower, 6th floor, Jl. Atang Sanjaya No.21, Benda, Kota Tangerang, Banten 15125. Visit the homeX Showroom.

Disclaimer: prices change without notice and differ by store, city, pack size, grade and promotion. Data as of 23 October 2026; always confirm with the seller before buying.

FAQ

How long must a new wall wait before painting? The Nippon 3-IN-1 TSDS says optimum condition of a new wall generally takes 1 month. The Dulux and Jotun documents we read give no wait time; Dulux sets wall conditions (moisture and pH) only.

What moisture limit does the TDS give before painting? Nippon: above 12% (Protimeter) or 6% (Elcometer) is avoided, together with pH above 9. Dulux Diamond Sealer A1000: below 17% (Protimeter) and pH below 9. Dulux Alkali Killer: not applied above 22% (Protimeter). Jotun Jotashield Primer: no written limit.

How many litres of primer for 100 m² of wall? One coat, theoretically about 8.3–12.5 litres depending on the product (homeX calculation from the TDS spread rates), before waste and absorption by rough walls.